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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.systemui.statusbar.car;
     18 
     19 import android.content.Context;
     20 import android.util.AttributeSet;
     21 import android.view.View;
     22 import android.widget.LinearLayout;
     23 
     24 import com.android.systemui.R;
     25 import com.android.systemui.statusbar.phone.NavigationBarView;
     26 
     27 /**
     28  * A custom navigation bar for the automotive use case.
     29  * <p>
     30  * The navigation bar in the automotive use case is more like a list of shortcuts, rendered
     31  * in a linear layout.
     32  */
     33 class CarNavigationBarView extends NavigationBarView {
     34     private LinearLayout mNavButtons;
     35     private LinearLayout mLightsOutButtons;
     36 
     37     public CarNavigationBarView(Context context, AttributeSet attrs) {
     38         super(context, attrs);
     39     }
     40 
     41     @Override
     42     public void onFinishInflate() {
     43         mNavButtons = (LinearLayout) findViewById(R.id.nav_buttons);
     44         mLightsOutButtons = (LinearLayout) findViewById(R.id.lights_out);
     45     }
     46 
     47     public void addButton(CarNavigationButton button, CarNavigationButton lightsOutButton){
     48         mNavButtons.addView(button);
     49         mLightsOutButtons.addView(lightsOutButton);
     50     }
     51 
     52     @Override
     53     public void setDisabledFlags(int disabledFlags, boolean force) {
     54         // TODO: Populate.
     55     }
     56 
     57     @Override
     58     public void reorient() {
     59         // We expect the car head unit to always have a fixed rotation so we ignore this. The super
     60         // class implentation expects mRotatedViews to be populated, so if you call into it, there
     61         // is a possibility of a NullPointerException.
     62     }
     63 
     64     @Override
     65     public View getCurrentView() {
     66         return this;
     67     }
     68 
     69     @Override
     70     public void setNavigationIconHints(int hints, boolean force) {
     71         // We do not need to set the navigation icon hints for a vehicle
     72         // Calling setNavigationIconHints in the base class will result in a NPE as the car
     73         // navigation bar does not have a back button.
     74     }
     75 }
     76